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| author | Jakub Jelinek <jakub@redhat.com> | 2013-01-03 10:02:41 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2013-01-03 10:02:41 +0100 |
| commit | 8b5546d6740ad9c56eaed8285ff501da3453e924 (patch) | |
| tree | 0b6ed676df8d526772e919008d4fbf0a44fdc045 | |
| parent | 8ab1d2e90f3e49593e490bc70199c4b97155f4ba (diff) | |
| download | gcc-8b5546d6740ad9c56eaed8285ff501da3453e924.zip gcc-8b5546d6740ad9c56eaed8285ff501da3453e924.tar.gz gcc-8b5546d6740ad9c56eaed8285ff501da3453e924.tar.bz2 | |
re PR middle-end/55832 (ICE in fold_convert_loc, at fold-const.c:1967)
PR tree-optimization/55832
* fold-const.c (fold_binary_loc): For ABS_EXPR<x> >= 0 and
ABS_EXPR<x> < 0 folding use constant_boolean_node instead of
integer_{one,zero}_node.
* gcc.c-torture/compile/pr55832.c: New test.
Co-Authored-By: Marc Glisse <marc.glisse@inria.fr>
From-SVN: r194836
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/fold-const.c | 10 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr55832.c | 23 |
4 files changed, 43 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0c89cc4..346b366 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,12 @@ 2013-01-03 Jakub Jelinek <jakub@redhat.com> + Marc Glisse <marc.glisse@inria.fr> + + PR tree-optimization/55832 + * fold-const.c (fold_binary_loc): For ABS_EXPR<x> >= 0 and + ABS_EXPR<x> < 0 folding use constant_boolean_node instead of + integer_{one,zero}_node. + +2013-01-03 Jakub Jelinek <jakub@redhat.com> PR debug/54402 * params.def (PARAM_MAX_VARTRACK_REVERSE_OP_SIZE): New param. diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 0a8b90a..4f384a7 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -1,7 +1,7 @@ /* Fold a constant sub-tree into a single node for C-compiler Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, - 2012 Free Software Foundation, Inc. + 2012, 2013 Free Software Foundation, Inc. This file is part of GCC. @@ -13519,7 +13519,9 @@ fold_binary_loc (location_t loc, "when simplifying comparison of " "absolute value and zero"), WARN_STRICT_OVERFLOW_CONDITIONAL); - return omit_one_operand_loc (loc, type, integer_one_node, arg0); + return omit_one_operand_loc (loc, type, + constant_boolean_node (true, type), + arg0); } /* Convert ABS_EXPR<x> < 0 to false. */ @@ -13533,7 +13535,9 @@ fold_binary_loc (location_t loc, "when simplifying comparison of " "absolute value and zero"), WARN_STRICT_OVERFLOW_CONDITIONAL); - return omit_one_operand_loc (loc, type, integer_zero_node, arg0); + return omit_one_operand_loc (loc, type, + constant_boolean_node (false, type), + arg0); } /* If X is unsigned, convert X < (1 << Y) into X >> Y == 0 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b3418f1..12f1688 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2013-01-03 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/55832 + * gcc.c-torture/compile/pr55832.c: New test. + 2013-01-02 John David Anglin <dave.anglin@nrc-cnrc.gc.ca> * gcc.dg/pr55430.c: Define MAP_FAILED if not defined. diff --git a/gcc/testsuite/gcc.c-torture/compile/pr55832.c b/gcc/testsuite/gcc.c-torture/compile/pr55832.c new file mode 100644 index 0000000..221c3c9 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr55832.c @@ -0,0 +1,23 @@ +/* PR tree-optimization/55832 */ + +int g, b; + +void +foo (void) +{ + union U { int i; unsigned short s; } a = { 0 }; + unsigned char c; + unsigned short d = 0, *p = &a.s; + + if (g) + a.i--; + + if (b && a.i < (d = 1)) + return; + + for (; a.i < 15; a.i++) + b |= d <= c; + + if (!*p) + g = 0; +} |